Sig Sauer P320 Full-Size 9mm, FDE Optics-Cut Slide, 4.7 in Threaded Barrel with Herrington Arms Single Comp, DPM Recoil System, 4x 21-Round Mags
This full-size Sig Sauer P320 stands out with a 4.7 in stainless threaded barrel paired to a Herrington Arms Single Comp, an FDE slide with an optics cut, and performance-focused upgrades including a flared magwell and a flat-faced, skeletonized, gold-colored trigger shoe. It retains the P320 modular FCU design and comes with four 21-round magazines, a DPM Recoil System kit, a spare Ballistic Advantage barrel, an extra carry grip module, and a complete belt and holster setup.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The exterior shows a few faint surface scratches and small blemishes from light handling. The bore is bright with a reflective finish.
What’s Included
- Sig Sauer P320 Full-Size 9mm pistol
- 4x 21-round SIG P320 magazines (bodies stamped "MADE IN ITALY" with extended polymer base pads)
- Herrington Arms single-port compensator (installed)
- Flared magazine well (installed)
- Flat-faced, skeletonized trigger shoe (installed)
- Spare Ballistic Advantage 9mm P320 barrel (marked "320-XC" and "9x19")
- DPM Recoil Reduction System kit for SIG Sauer P320 Compact Version 1 & 2
- SIG Sauer P320 / X-Series manual
- SIG Sauer P320 carry grip module (additional)
- GBRS Group Assaulter Belt System V2 (L/XL, MAS Grey)
- Priority 1 Holsters OWB Kydex holster
- Drop holster adapter with leg strap
The core of this build is the P320 modular platform with a removable serialized FCU, giving flexibility for future configuration changes. The full-size format uses a 4.7 in stainless barrel that is factory threaded 1/2x28 and fitted with a Herrington Arms Single Comp for controlled, fast follow-up shots.
The FDE slide is optics-cut and features front and rear cocking serrations. The optics cut has exposed screw holes with the cover plate absent, allowing direct mounting once a compatible optic and hardware are selected. A tritium front sight marked "TG-H3" and dovetailed irons provide a clear, low-light aiming reference.
Controls and ergonomics are enhanced by a flat-faced, skeletonized, gold-colored trigger shoe and a flared magwell to speed reloads. The grip module incorporates a six-slot 1913 accessory rail for lights or other accessories. Capacity is noted at 21+1, and this pistol includes four extended 21-round magazines.
Additional components add value and versatility: a DPM Recoil System kit is included, offering a multi-spring recoil assembly option; a spare Ballistic Advantage 9mm P320 barrel (marked "320-XC" and "9x19") is provided; and an extra SIG P320 carry grip module broadens setup choices. A GBRS Group Assaulter Belt System V2 (L/XL, MAS Grey), Priority 1 OWB Kydex holster, and a drop adapter with leg strap round out a ready-to-use carry rig.